Loom with shuttle changing and loom stopping mechanism



Dec. 28, 1937.

LOOM WITH SHUTTLE yCHANGING AND LOOM STOPPING MECHANISM R. G. TURNER 2,103,800

Filed March e, 1935 6 sheets-sheet 1 Dec. 28, 1937. v R, G, TURNER .2,103,800

. LOOM WITH SHUTTLE CHANGING AND LOOM STOPPING MECHANISM WT( C gnuentor Richard Greeren Tur ner Y attornexg, I

R. G. TURNER 2,103,800

LOOM WITH SHUTTLE CHANGING AND LOOM STOPPING MECHANISM Dec. I28, 1937.

6 Shets--Sheel 3 Filed March 6, 1935 Dec. 28, 1937. R. G. TURNER 2,103,800 LOOM WITH SHUTTLE CHANGINGy AND LOOM STOPPING MECHANISM I Filed Marjoh 6, 1935 6 Sheets-Sheet 4 -ummmnnnml gnu ent o r' Richav Greerea Tur ner I #www ttornegs R. G. TURNER LOOM. WITH SHUTTLE CHANGING AND LOOM STOPPING MECHANISM Dm.r 28, 1937.`

Filed Maroh', 1935 6 Sheets-Sheet 5 Snuentor Richard Grnkea Turnerf l f' l1 tor-nega,

Dec. 28, 1937. f R. G. TURNER 2,103,800

Loom WITH SHUTTLE CHANGINGAND Loom sToPPING MECHANISM Filed Maron 6, 1935 e sheets-sheet e Inveritor Richard GreemeTurnev Patented 28,1931

f llill'lejllur STATES PATENT OFI-*flea -A :BichardGreenleaf Turnerl Worcester, Mall., as-

signor to Crompton & Knowles Loom Works'. Worcester, Mass., a corporation lor Massachusetts jfappuesuon Maren s, 193s.r serial No. me45 v e n achim.

This invention relates to improvementsin fancy or multishuttle box looms and it is the poses. In such a loom there is less `need for auto matick renewal of the'running weft in the infrequently used weavingt shuttles than is the case with those shuttles which are in more frequent action. Mypresent invention provides an emcent and vcomparatively simple loom which changes a part onlyof the running .shuttles automatically and stops the loom when exhaustion e approaches in the other shuttles, so that they may be replenished by hand. u' f It is a further object of-,my presentinvention to provide av single weft detector on the magazine end of the loom to detect the condition of each yrunnnlng shuttle .when ,atv that end `of theloom. By such a feeler I am able to keep lany shuttle in action as long`as desired and am not restricted to any definite or limited sequence as is the case with certainmultishuttle shuttle changing looms heretofore proposed. The. detector fgives'the indication which initiates either Shuttle changing or loom stoppage, depending upon which of the several shuttles is empty.

It is a further object `oi' my present invention to provide two separate loom controllers, l one a shuttle changer and `the other loom stopping mechanism, both of ,which are undercontrol of a single weft detector,` together with a part movl ying in timed relation `with the box motion which venting pick or beat of the loom wheny the active o controls the shifting ,or kdrop boxes. l'Ifhe shuttle 'changing controller may includeselector mechanism for the shuttle changing magazine to afford achoice of changing operations, while the stop- "ping controller will have but one modeof operae tion, with the same resultnamely stopping when.-

ever the less frequently used shuttles are, exhausted. By this varrangement the single weft detector initiates al1 of the changes which areto bring about an alteration in loom operation either vchanging or stopping, while the part m'ovingin timedf relation with the box motion determines which kind of alteration is to occur.

It is a further object of my invention to provide 55j Va loom as already described wherein an indica- .warp fault.

(crise-232) Y' l i tion for a shuttle change can'be stored andlrel tained during and after a period in which the loom is stoppedfor hand replenishment of some oi' the shuttles. :In this way-,a very active shuttle carrying a white weft, forinstance, can indicate exhaustion when at the magazine end of the loom y and then upon arriving at the drop box end of the loom be moved out of action by a. control exerted through the pattern mechanism, whereupon an infrequently'activeshuttle comes into action and acts through the vdetector to stop the loom.

Uponresumption lof weaving the shuttle first yto indicate will ultimately` become active again and will be replaced by a similar reserve shuttle upon its arrival at the magazine end oi' the loom, theindicationfor such a change having been retained. y,

When the weft feeler is on the magazine end it must be withdrawn at the time oi exchanging -.shuttles to prevent breakage and a repeated instopping shuttle is outof contact with the feelerl to prevent burning of the latter, and a repeated indication cannot begiven.

- It is another object of my present invention to employ the shuttle. changing and loom stopping means together with a warp stop motion and so time the parts that when the loom is stopped because of approaching lexhaustion the shuttle needing replenishment will `beat the drop box side of the loom whereaswhen the loom is stopped becauser o1' a warp fault it vwill come on the intershuttle is on the opposite `or magazine side of the loom. By this relation the weaver can tellat a glance whether the loom wasstopped by weft or I am'aware that it has beenproposed heretofore to'use multibox looms with'bobbin changing attachments, but practical experience shows that such looms are not entirely satisfactory in the weaving of certain fabrics because of the fact that the shuttle is not fully threaded on the first pickafter transfer, and also the thread end extending from the outgoing bobbin is likely to be drawn back into the shed to form a double pick.

That part of my present invention which relates trailing weft end with the old shuttle;

'I'he warp stop motion is ordinarily c apable of giving an indication of warp fault at any time including that period in the cycle of the loom when the weft detector gives its indication. Where the loom stopping control for both the warp stop motion and the detector is exercised through a single solenoid there is an opportunity for the warp stop motion to excite the solenoid at the time the feeler was detecting on a full bobbin and a false indication for weft stopping might therefore result with the shuttle boxed in the shifting boxes. It is a further object of my invention .to prevent such improper stopping by interrupting the circuit of the warp stop motion so that it cannot give an indication ,to the common controlling solenoid at the time the weft detector is having its detecting action.

is fully threaded and completely removes'the With these and other'objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein a convenient' embodiment of my invention is set forth,

Fig. 1 shows the forward part of yone end of the loom having my invention applied thereto,

Fig. 2 is a. view of a part of the opposite `enel of the vloom showing four shifting shuttle boxes together with the box motion,

Fig. 3 is a plan taken in the direction of arrows 3 3, Fig. 2,

Fig. 4 is a view similar to a portion of Fig. 2 with the parts in a different position.

Fig. 5 is a view on an enlarged scale of certain of the structure shown in the lower vpart of Fig. 1,

Figs. 6 and 7 are diagrammatic views showing the structure of Fig. 5 in diillerent positions,

Fig. 8 is a transverse section on line 3 3, Fig. 5 on an enlarged scale,

Fig. 9 is a diagrammatic view of the electric circuits,

Fig. 10 is a transverse section through the lower interior part of the loom,

Fig. 11 is a plan view in the direction of arrow il, Fig. 10, Y

Fig. 12 isa horizontal detailed section on line |2-i2 of Fig. 10,

Fig. 13 is an enlarged vertical section on line I3-I3 of Fig. 5,

Fig. 14 is a plan view of the parts shown in Fig. 13 taken in the direction of arrow I4, and

Fig. 15 is a detailed horizontal section on line |5-I5 of Fig. 5.

In the drawings I have shown several known mechanisms which cooperate with themselves and other new parts to carry my invention into effect. These known parts comprise the Imultishuttle magazine, the shuttle changing boxes and their lifter motion, selector means todetermine which type of reserve shuttle is to replace the empty shuttle, weft detector mechanism, loom stopping.y mechanism, and box motion parts together with a fourlcell gang of shifting shuttle boxes atthe side of the loom opposite the magazine. These parts will'be described after which ther mannerin whihftheygare associated with my present invention.will-beset forth.

Referring toithe'drawings, the loom frame I5 supports a reserve shuttlemagazinefgj-Mhaving front and back stacksof reserve Vslnittles 'iiand |1,respectively. The front stack'. oi'shuttles-fis f to renewal of the weft employsshuttle-changing' mechanism which places in action a shuttlewhich supportedl iny part by a lever i8 having a nger I9 'to'pass Vunder the bottom front shuttle. A link connects lever i9 with a second lever 2l pivoted to the magazine and operated by a rodv 22 which extends down toward the lower part of the loom and has adjustably secured thereto a hook 23. Y

The back stack of shuttles rests on a floor 24 and a plunger 25 is arranged to move the bottom rear shuttle forwardly into the compartment C located under the bottom front reserve shuttle. This plunger 25 is moved by a lever 26 operatively connected to a second downwardly extending rod 21 having a hook 28. A spring 29 may be used to return the plunger to its rear position. The magazine may have other parts not shown herein but set forth more specifically in my co-pending applications Serial Nos. 460,746 and 560,573. It is sufilcient for the purposes of the present invention to state that if rod 22 be depressed by mechanism to be described a front reserve shuttle will be released to fall into the space C and that when rod 21 is depressed the bottom rear reserve shuttle is moved forwardly into the compartment. Any shuttle arriving in the compartment is ready to be moved to the lay and into action.

Themeans for actuating the rods 22 and 21 may comprise a changing box lever having a lifting ledge 3| and pivoted about a fixed stud 32. The forward end of this lever 30 is connected by means of a two-part yielding link 33 to an upwardly extending box rod 34 to support upper weaving. box 35 normally in active posiltion and lower auxiliary box 36 below the race and unoccupied.

A lifting lever 31 is also pivoted to stud 32 and is rocked by means of cam 42 so that the forward end thereof moves upwardly every second beat of the loom shortly after the active shuttle is boxed on the shifting shuttle box side of the loom. A dagger 39 is movably mounted on the lifter lever 31 and normally clears the ledge 3| when rising, but is movable under ledge 3| by either of two trips 39 and 40, see Fig. 5, so as to raise lever 30. The rear end of lever 30 is provided with a lug 4'| which moves down whenever the latch 33 raises the forward end of lever 30 and this lug has engagement with one or the other of the hooks already described.

The lselecting mechanism for determining whichl of the hooks is to become operatively re# I lated with the stud 4| comprises a selector lever 43'pivoted as at 44 to a bracket 45 secured to the stud 32 in ilxed position. The upper end of this lever is arranged to guide the hooks so that the same move back and fork with the rocking 0f the lever 43. When the lower arm 46 of lever 43 is pulled to the left by a cable 41 moved by the shifting boxes the forward hook 28 is under the stud 4|, but when the cord or cable 41 is slackened a coil spring 48 attached to the lever 43 rocks the latter so that the hook 23 moves forwardly and under the stud 4|.

Rocking of the lever 43 is operative through a rod 49 to move a slide 50 on a guide rod 5| to vary the position of theY trips 39 and 40 so that but one of them canY be positioned at a time to throw the latch 38 toward the ledge 3|. A solenoid 52 is mounted on lever 30 and has a core 53 connectedltoa" rocking trip 54 movable in a vertical plane flxedfwith respect to lever 30. The parts'are vshown more clearly. in Fig. 13, where the hub 55 of a carrier' ',5I1'l1isshown as mounted for slidingmoveme'nt on rods" 5iicrried by lever .,'30., ,The carriersupports the"`"latche sf39 and 40 other of lthe latches in vertical alignment with the trip.. The rso that the lower .end of the latter willffswing solenoid acts to rock the 4latches from the normal inactive 'position at the right over towardthe edge to direct dog 'into' lifting' f relation with the 1ever-30.`v The carrieri50 is'notv y.

limited to the two positions correspondingjto 'the' two stacks of reserve shuttlesin `the magazine, but iscapable of additional sliding motion for a The detector mechanism in`this instance, is

illustrated as a double prong'electric feeler D, see

Fig. 1, fastened to a levery 60 and .pivoted as at 6| to a bracket 02 secured to 'and extending forwardly from the y magazine frames. Lever 60 has a finger 63 which is connected to ra tension spring operative normally to holdf the detector in rearwarddetecting positionfwith a stop screw 95 adjustable to determine the correct position of the prongs 06 and 61 ofthe detector.

The prongs 09 vand 61 arenormally so placed that they A,enter the active shuttle which is in the upper box" on alternate beats as the lay L moves forwardly with the active 'shuttle on the magazine side of the'loom in box 05. The detectors may if desired move through a binder 09 mounted on the lay and not sharing the vertical motion of the boxes. on a movable support isto permit the same to be moved forwardly at the time of shuttle change the incoming and outgoing 4 one only will be active at stime. These cells are shown at 10, 1|, 12* and 13 and accommodate shuttles CS', CS. 'SS' andfSS, respectively. As contemplated at' present each of these weaving shuttles will return to the same cell at the shifting shuttle box side of the loom and will ordinarily enter the upper cell at the opposite iside except on Ashuttle changing beats of the loom. These cells are mounted on a rod which is connected as indicated in Fig. 2 to the lower end of a link 10 in any approved manner. The latter is adjustably connectedk tothe forward end of a box lifter lever 11 pivotedas at 10 to an arm 19 movable about a fixed stud 90. Stud 19 therefore constitutes a floating pivot for the lever 11 and by combining various movements of lever 11 and arm 19 the link 10 is positions.

Any well-known means may be used to accomplish this result. but I 'have shown herein a pair of links 0| and 02 which are connected at theirupper ends respectively, to lever 11 and combined to give the y Figs. 1 and 10 where it will be 'seen that the usuall arm 19. These links are connected at their lower ends to cranks 03 moves Aabout stub shafts 95 and 00, respectively.

These latter shafts are movable independently of each other by a force derived from the bottom shaft 01 and they are controlled as to the time of' v their operation by pattern mechanism not shown and also sliding teeth on mutilated gears .v vFor further details of the box motion reference may be had to patent to Lundgren No. 1,679,616.` By relations which are well understoodvthe' up and down motions of thetwo' links 0| and 02 can be shifting Shuttle'v boxes any one oftfourvpositions.

The loom` stopping mechanism is shownLin form offshipper housing 95.

The object in mounting the detector c rnaining shuttlesjis depleted. pThe .controls given foul' dineren@ nism or the loom stoppingk mechanis erate arerexer mechanism acting f lin the pr f tion .shown therein and 94, respectively, 'which Kv afed'rmmed by ,bechanged or ,replaced Vshuttles SS" "Whenever box 10` or 1| is opposite the'racethe has the: lower endl thereofconnectedwithl al knock-off rod 92. Th

a ,working 4and.-thferrfa*'noneworkins 96 may movefabout apivo 99 A solenoid |00 located yftheghoiisinghasial core |0I which is normally dow'n'andoperatively connected to a transmitting link |02*pi vote`d-`a`s at |03 to the arm 99 andhaving'the vleftlen'ci thereof normally below the path ofthe finger 99-when the latter has a working stroke. Upon energizetion of the solenoid'the core is raised yto lift the link |02 so that the samelies in the path of the finger 99, and .as cam 91 gives the arm-90a working stroke, the link is given a longitudinal motion to rock arm 93 forwardly and' act through rod 92 to move the shipper handle rearwardly or to the right in the positionshownin Fig. 1 to v acts to hold said lever "|00 rearwardly. A clip |00 30 adjustably mounted on the rod |00 is connectedby means of a4 spring |09 to the stem I0 of a switch III to be closed when the shipper handle is in driving position but open when the shipper handleis instopping position. Reference to Fig. 11 shows that the arm'99v is forked at its rear end, fork III cooperating with the cam 91. The latterisadjustable angularly on the bottom shaft so that the loomA can be stopped with the lay about in protection position when the active shuttle is onV the magazine side of the loom or in box 36; i f

The several mechanisms just described of themselves form no part of my invention and may be operated and constructed in the usual manner.

As previously stated my present invention relates to means for replacing either of twoof the weaving shuttles when exhaustedv and stopping the loom when one or the other ofthe two redetermine` whether-the lshutkztleg'rfzliaifigi gjmecha through thel box motion.

By referringto Figs. 2,

lis `capable' ofd'giving `four positions tov the shifting shuttle boxes. `which the positions of links v8 and 02. $huttles CSI'y and CS2. are those which are to by fresh shuttles, while and SS2 effect loomk stoppage.

rear link9l `will be in high position,'link 92 and up whenl box 1 lis in picking position.: When boxes `12 or 19 are to be aligned with the race the link 8| will be down as shown infFig. 4, and link 82 also be downwhenbox 12iis' active and up as `shown in Fig. .4 when, the lowest cell or box 13 Y is in picking position.

A simple,` control can be exercised-,because of the fact that: link 0| is in 'one position whenever the uppertwo boxes are 75 cov4 ' through lever 43.

active and down when either of the lower two boxes is active.

The cable 41 which rocks the lever 43, see Fig. 1, extends from the shuttle changing to the shifting shuttle box side of the loom and is led upwardly as shown in Fig. 2 to have adjustable connection with a positioning lever |20. 'I'his lever has a rear arm |2| with a rolly |22 to be held against a rotatable cam v|23 moving with the crank 84 by means of spring 48 acting A disabling lever |24 has a forward arm provided with a roll |25 to coact with a cam |26 secured to arm |2|. Lever |24 also has an eccentric follower |21 to be guided in angular adjusted position to coactV with a second rotatable cam |28 moving with crank arm 83. Cam |23 has a high dwell |28 and a low dwell |30, while cam |28 has a high dwell |3| and a low dwell |32. Follower |21 can be adjusted tovary the position of lever |24 by means of nut |21a on screw |21b carried by the disabling lever, see Fig. 3. y

When either oi' the upper twocells is to be active the link 8| will be raised and the cam |28 given such a position that roll |21 is on its low dwell, thereby permitting roll |25 to move away from the 4cam |26 by gravity. In this position therefore roll |22 and the positioning lever can respond to cam |23, being on the low dwell |30 when the boxes are in their lowest position and on the high dwell |28 when shuttle box 1| is in picking position. With link 8| raised therefore the lever 43 can have the same character of selecting motions as have been heretofore described in my copending applications Serial Nos. 460,746 and 665,140.

From this description it will be seen that wheneverthe shifting is confined to boxes 10 or 1|. the carrier 56 will slide to place one or the other of the latches 39 or 40 under the trip 54 and the loom will operate as a two-color shuttle changing loom, the shuttle changing mechanism being in timed relationwith the active shuttle CS or CS2, as the case may be.

When either of the lower shuttle boxes 12 and 13 is to be active, however, link 8| is down in the position shown in Fig. 4 and cam |28 takes such a position asv a result of the reversal of crank arm 83 as to place follower |21 on the high dwell |3|. This causes roll |25 to push cam |26 and the positioning lever to the third or neutral The hooks 23 and 28 will occupy one of two positions when either of the upper pair of shuttle boxes is in picking position and these hooks together with the control lever 43 will under those conditions operate as in my aforesaid applicationSerial No. 665,140. When the lever 43 is given its additional motion incident to the activity of shuttle SS or S52 provision must be made to prevent damage to the hook. This resultI accomplish by means illustrated in Figs. 5, 6 and 7. Hook 23 ywill ordinarily pass through a hole |33 in the lever 43, see Fig. 15, and will therefore be positively positioned by the latter when saidv lever rocks in either direction'. Hook 28, on the other hand, lies in a slot |34 which is open at the front end thereof to receive a pressing n'ger |35. The latter is pivoted at |36to lever 43 and a tension spring |31 interposed between lever 43 and the pressing finger holds the latter v tact with rocking cams |46 and |41,

yieldingly in rear position to cause seating of hook 28 against the rear of slot |34.

The connections are such that when either of the upper two shuttle boxes is active the hooks will move back and forth as previously described so that one or the other of them will be in operative relation with respect to the stud 4|, but when the lever 43 is given its additional motion due to the activity of either shuttle SS or SS,

the lever 43 will rock from the position shown in Fig. 6 to that shown in Fig. 7 and the yielding finger |35 will move forwardly relatively to the lever 43, holding the hook 28 against the pin 4|. In this way the hooks are able to accommodate the third position of the lever 43.

As will be apparent from Figs. 2 and 4 the positioning lever |20 maintains its third position due to the fact that link 8| is down and roll 22 is away from cam |23. The link 82 can thereforeV rise and fall to render either of the lower pair of shuttles active without disturbing the position oi' the disabling or positioning levers.

The control circuit has two branches, one of which goes to the shuttle changing solenoid 52, and the other of which goes to the stopping solenoid |00. In order to determine which branch of the circuits and therefore which of the solenoids 52 or |00 shall be energized I provide a controller positioned by lever 43.

This controller comprises a box |40 carried by the xed bracket and having pivoted thereto as at |4| two circuit closing arms |42 and |43 carrying rolls |44 and |45, respectively, to conrespectively. Each cam has a high dwell |48 and a low dwell |49, but the dwells are staggered as shown in Fig. 5 so that when a high dwell of one cam is elevating its corresponding roll the low dwell of the other cam permits its roll tol assume low position. The two cams are rigid with a depending arm |50 connected by an adjustable rod |5| to the rocking control lever 43. The connection between rod |5| and the lever may include stud |52 adjustable along a slot |53 in lever 43. By means of this adjustment the proper throw of the cams |48 and 41 may be derived from the lever 43.

As seen in Fig. 8 the arm |42 carries a contact screw |54 while the other lever |43 carries a similar contact screw |55. These contacts areconnected to wires |56 and |51, respectively, and are each adapted for engagement with a contact plate |58 insulated from and supported by the housing |40. A wire |59 is connected to the contact plate |58 and depending upon the position of arm |50 one or the other of the contacts |54 and will be in electrical engagement with the plate |58. The relation of the parts is such, however, that but one contact can be made with the plate |58 at a time. When the parts are in the position shown in Fig. 6 and the loom is set to exchange one or the other of the shuttles CS' or CSn contact |55 will be elevated by cam |41 while contact |54 will be down and touch plate |58. The dwell |48 of the cam |41 is suilicient to maintain this position whether box 10 or 1| is in picking position.

When either of the shuttles SS or `SS2 is in action the parts will take the position shown in Fig. 7, where it will be seen that contact |54 is raised by cam |46 and contact |55 is down on plate |58. It will be seen therefore that the box motion shown in Fig. 2 not only selects which of two shuttles CS' or CS2 shall be replaced by reserve shuttles, but also determines whether wire |58 and |51 shall be connected to plate |58.

ture and operation of the warp stop motion referto priorl 'patent to Payne No.

It is customary in those types of looms which are supplied with shuttle changing mechanisms to employ an electrical `warp stop motion. As already stated a warp stopmotion is ordinarily aiwayscapable of giving its indication and might therefore excite solenoid at the instant of contact between the detector and a full shuttle should a. warp thread break atthat time. There would Y result a misindication, which I prevent by interl block |65 sliding betweenthe the magazine side every rupting the warp stop motioncircuit periodically and during the interval that the weft detector is in contact with the weft supply being detected. f

Referring to Fig. 10, I'have shown the loom frame I5 as] provided with a bracket'l60 onthe upper end of which is located a housing |6| supporting two insulated spaced contacts |62 and |68. These contacts maybe of resilient material and are mounted asset forth particularly in Fig. A12 to be in vertical alignment with a contact closer |64. The closer is vertically adjustable 'on a blocks |66 of insulating material on which the contacts |62 and |68 are mounted; Theblock derivesits vertical reciprocating motion from a lever |61 pivoted as at |68 to the bracket |60 and having a roll |68 which contacts with a carnor eccentric |10von thebottom shaft 81.

Itis to be understood that inthe normal operation of the loom the activeshuttle will be on other beat of they lay, and since the bottom shaft has a complete revolution every other beat of the lay, the cam or eccentric |\10 will act to raise lever |61 once for every alternate nondetecting beat of the lay and will act to lower the block on the intervening detecting beats of the lay. The low point of the cam or eccentric |10 is so set as to effect lowering of block |65 during the detecting interval when the feeler is in contact with the active shuttle and the latter is ony the magazine side of the loom. At other times the contact closer |64 is raised to complete a circuit between wires |1| and |12 which are connected, respectively, to the contacts |62 and |63. A pin and slot connection designated generally at |13 may be employed to effect reciprocation of the block |65a`s the lever |61`rises and falls.

The bottom shaft81 has secured thereto a cam |15 `which is positioned for-cooperation with a fork |16 formed integral with the arm 86. y'I'lie latter may therefore be `raised either4 by cam 81 for the normal warp stopoperation of theloor'i,- or by cam |15at of loom operations and responsive to the weft detector. As seenl in Fig. 10 thehigh points of these two cams are separated by a considerable angle and it is for this'reason that the rod 82 can be acted upon to stop the loorn by a warp fault with the shuttle on the-magazine side of the loom kor by a weft indication through'cam |15 when the depleted shuttle SS' or SS is on the shifting shuttle box side of the loom.

The warp stop motion is not shown structurally in the drawings but the essential parts thereof are indicated diagrammatically in Fig. 9, where it will be seen that a contact electrode |85 is inclosed by but insulated from a second contact electrode |86. The latter is connected by wire |81 to the ground and both contacts extend through a slot in the upper part of a drop wire |88 which is normally held elevated by the warp W. Upon warp fault the drop wire falls to effect electrical connection between the bars |85 and |86. For a further understanding of the strucvcircuit will energize a diierent point 'in' the cycle ence may be had 1,852,024.

The operation `of the several parts maybe understood from the diagrammatic layout ofthe various' circuits shown in Fig. 9. It will be understood that `the rpattern mechanism not shown controls the box motion so that one or an other of the shuttle boxes maybe opposite the race on the lay L; Assuming-that either of the shuttles CS' `vor CS2 is active, the contact |54 will rest on contact plate |58 and current will iiow through the following vcircuit when uncovered ferrule F of a bobbin B in the active shuttle'` is presented to the detector:` ground, wire |82, the detector prong 61, ferrule F, prong 66, wire |58, plate |68, contact |54, (contacti55 being raised),'wire` |56, shuttle changing solenoid 52, wire |80,- binding post |80 of the switch Iii, closure |80 of the switch, blndingpost |8| of the switch, wire |83, source of electric power P, andI wire |84 to the ground.v

K the solenoid 52 to throw the latch 38 or 40corresponding to the" indicating shuttle preparatory to an operation of the shuttle changing mechanism. So long as either `olf shuttles CS' or CS2 isinaction the contact |54 will be on plate |58 and if eitherof theseshuttles should present a tector the circuit `just traced will be closedand an indication will be given through the selector mechanism shown lin Figs.113 and 14. The slide of theselector which is positioned by thelrod 48 will be either in the dotted or full line position shown in Fig. 14 when the circuit already traced is closed. The relative position of the several partsassociated with lever 48 will be in the position shown irrFlg. 6, where the showing in full lines is for shuttle CSz and in dotted lines for shuttle CS'.

When the pattern mechanism calls for a change so that one of the shuttles vSS' `or SSz is to be active there will be a reversal of the contacts contained in the box |40 and upon presentation of an .exhausted shuttle to the detector the follow- Current flowing in thisk f ing circuit will be closed: ground, wire |82, the

(contact ,|54 now .being up), wire |51, solenoid |00 of the knock-off device, wire |8|, switch wire |83, source of electric power P, and wire |84 back to the ground. Current flowing in this circuit does not energize the shuttle changing solenoid but does excite the solenoid |00 which controls the linki02. At a later time in the operation of the loom` this link will be actuated as already described to stop tle on the drop boxrside. During the closure of thel second circuit the parts will tion shown in Fig. 7, and the carrier will be in the dot and dash position of Fig. 14, rthe structure'fbeing modified `to permit the extra motion where `the\latchesare out of possible engaging `position with the dog 88. 1

It is to be understood that at the time thedetector can close either of the two preceding cirthe loom with the shutbein the posicuits,the circuit closure |64' will be-spaced from IBI, switch III, wire |83, source of electric power P, and Wire |84 back to the ground. Current flowing inths circuit willkset theknock-oif device to stop the loomwith the active shuttle on the magazine side of the loom. c ,i

It is to beunderstood that switch III is in the position shown in Fig.-,9 so long as the loom is running but when the shipper handle moves to stopping position spring `Ilil acts to permit opening ofswitch I I I so that Whether the loom be stopped by the warp stop motion or the detector, current will not ilow through' their respective circuits after the loom lhas come to rest.

From the foregoing it will be seen that I have provided a. loomv operating `with a plurality of shuttles certain of which are replaced by a shuttle changingmechanism Vand others of which eiiect loom stoppage .upon depletion and that a'single detector cooperates with all the weaving shuttles. It will further be seen that provisionis made for stopping the loom with an active depleted vshuttle in the sluiting shuttle boxes, thereby giving the weaver a visual indication as to the cause of loom stoppage. It will also be seen that I have Vprovided a warp stop motion effective 4to stop the loom upon warp fault when the active shuttle is on the magazine side of the loom. yIn this connection it should be noted that three conditions exist in the loom, namely, a depleted weaving shuttle of one group will eifect stopping of the loom upon arrival at the shifting shuttle boxes, a depleted shuttle of another group will be replaced at the magazine side while the loom continues to run, and the loom will come to rest with an active shuttle on the magazine side upon occurrence of a warp fault. Furthermore, it will be noted that the warp stop motion is so controlled that it cannot act through the knock-off device during the weft detecting interval, provision thereby being made to prevent the warp stop motion from effecting `loom stoppage should either of shuttles SS or SS2 present a fullsupply oi' weft tothe detector. Another 'feature of the invention is the provision of means actuated through a pattern mechanism 7 controlleddevice, such as a'box motion, to determine which of two circuits can be closed by the weft detector to effect eitherrshuttle replacement or loom stoppage. The hooks which coact with the shuttle changing mechanism are modified with respect to their previous arrangement so as to permit movement of the control 'parts to a third or neutral 4position when either shuttle SS or SS? is active. The cams Bland |15 are so disposed angularly with respect to the bottom shaft 81 that they givethe knock-01T device two working strokes for each two pick cycle of the loom, one cam to assist stoppage veiiected by the weft-detector and the other acting in conjunction with the warp stop motion. Furthermore, the selector mechanism for the shuttle changer shown more particularly in Figs. 13 and 14 has provision for an additional motion beyond that heretofore employed to permit the latches to move out of possible operative relation with respect to the dog whichv causes rising of the shuttle changing boxes at the magazine end of the loom.y In connection with the selector mechanisml it should be noted that either of shuttlesCS or CS2 can give an indication oi.' weft exhaustion while on the magazine side `of the loom and then become inactivefor a period during which either of shuttles SS' or SS2 is active without -loss'of the indication, the return -of the indicating `shuttle to action immediately effecting a shuttle` changing operation of the magazine without the necessity of a repeated indication When the `shuttles SS or S52 vbecome active the latches are moved out of register with the dog so that had either latch been set by one of the shuttles `CS or CS2 no premature indication ofthe magazine could result.

4 Having thus described my invention it will be seen that changes and modications may be made thereinvby those yskilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In aloorn operating with a shuttle which is on one side ofY the loom on one beat thereof and on the oppositeside on the next beat thereof, stopping mechanism capable of stopping the loom on anybeatthereof, a two part actuator for the stopping mechanism requiring two successive beats of the loom for a complete movement thereof, the first part being capable of actuating the stopping mechanism during the first part of a completeniovement of the actuator on one beat of the loom and the second part being capable of actuating the stopping mechanism during the latter part of the same complete motion of the actuatorvon the second beat of the loom, a weft detector to indicate exhaustion of weft in the shuttle, means controlled by the detector when indicating weit exhaustion to cause the rst of said parts to actuate the stopping mechanism during the rst part of a complete movement of the actuator, and arwarp stop motion operative upon occurrence of a warp fault to cause the second part to actuate the stopping mechanism during the second part of a complete movement of the actuator, to the end that the shuttle will be on one side of the loom when the detector effects stoppage and on the other side when the warp stop motion effectsstoppage.

2. In a loom operating with a weaving shuttle which is on one side of the loom during one beat and is on the opposite side of the loom during the next beat thereof, stopping mechanism capable of stopping the loom on any beat thereof, two spaced actuators for the stopping mechanism moving togethrr and having a complete revolution every second beat of the loom, one of said actuators capable of actuating the stopping mechanism during one beat of the loom and the second actuator being capable of actuating the stopping mechanism during the next beat of the loom, a weft detector toindicate weft exhaustion in the weaving shuttle, a warp stop motion to indicate a warp fault,a forcetransmitting memberbetween the actuators and the stopping mechanism to cooperate with the latter and be moved byA either actuator to stop the loom whenever said force transmitting member isv in stopping position, placing means to move the force transmitting member to stopping position, and a controller for the placing means to cooperate with the detector when the latter indicates weft exhaustion to cause the placing means to move the member tostopping position' when one of the .actuators is capable of; moving the member and said controller cooperating with the warp stop motion kwhen the latter indicates a warp fault to cause the placing means to move the member to stopping position when the other of said actuators is capable of moving the member, tothe end that the shuttle will. be on one side of the loom when stoppage is effected through the/detector and on the other side of the ,loom when stoppage is effected through the warp stop motio I 3. rIn a loom loperating with a weaving shuttle which is on one side o1' the loom on one beat' Vthereof and on the opposite side of the loom on the next beat, stopping mechanism capab" stopping the loom on any beat thereof, actuators moving together and requiring two successive beats of the loom for a complete operation thereof, a force transmitting member to transmit a force from either actuator to the stopping mechanism when said member is in stopping position, a weft detector located at one side of the loom, placing means controlled by the detector when the latter indicates exhaustion of weft to move the member to stopping position to bel side when the warp stop motion effects stoppage. 10

- RICHARD GREENLEAF TURNER. 

